Gas-controlling valve.



PATENIED FEB. 19, 1907.

' H. w. HILL.

GAS CONTROLLING VALVE.

APPLIOATION FILED JUNE 25.1906.

WYZ'JVEciJES .Z'ZVVEJVTOR 4. AWM W MM M HERBERT WATSON HILL, OF CHICAGO,ILLINOIS.

GAS-CONTROLLING VALVE.

Specification of Letters Patent.

Patented Feb. 19, 1907.

Application filed June 25,1906. Serial No. 323,190.

T0 on whom it may concern.-

Be it known that I, HERBERT WVA'rsoN HILL, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented new and useful Improvements in Gas-ControllingValves; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to a novel construction in gas-controlling valves,the object of which is to regulate the flow of gas into the gas-line,which feeds a number of lamps with illuminating-gas and maintain asteady pressure therein. The controllingvalve is so constructed as toincrease the valve-opening automatically, thereby allowing a largervolume of gas to pass from the source of supply into the feeding-linewhenever the consumption is increased by'the addition of one or morelamps. The same valve-opening is decreased as soon as one or more of thelamps,

which are fed from the supply-line, are extinguished. It will beapparent that the regulation of the gas-volume which passes into thefeeding-line is at the same time a regulation of the gas-pressure, sothat a steady flame is produced always, no matter how many lamps may beburning at the sametime.

The object of my invention is to simplify the construction of theapparatus now in use for the above purpose by providing a valvehousing,in which the valve-seats are controlled by two V-shaped valve-disks,having a differential area, whereby the regulation of the volume of gasrequired in the feeding-line is greatly facilitated.

A further object of my invention is to allow the float to ride free andeasy upon the gas without guiding it at its upper end, as this oftenleads to binding by friction or otherwise and interferes with the evenflow of gas.

I attain these various-objects by the novel construction of theapparatus with a simple valve-housing therein and differentialvalveseats, as well as other features of combination of parts as arehereinafter fully described, and illustrated in the accompanyingdrawings, in which- Figure 1 is a vertical sectional view of agas-controlling valve, showing the interior arrangement. Fig. 2 is anexterior view of the closed and locked apparatus. Fig. 3 is a sectionalplan view at line A A, and Fig. 4 is a detail of the float and the twodifferential .V-shaped valve-seats.

Similar characters refer to similar parts throughout the several vievs.

The outer casing B, which is made preferably of cast-iron, contains thegas-inlet compartment O, the feeding-compartment D, and thefloat-compartment E. It is closed by means of a hinged cover F andsecured in its closed position by a hinged latch G, a correspondingeyepiece H, and a lock J The inlet-compartmentC has two bosses 1, whichare provided with a standard pipethread 2, so that the gas-supply pipemay be connected with the shell B horizontally or vertically, as maybemost convenient. Only one supply-pipe is used. The remaining opening isclosed by means of a pipe-plug. The walls of the inlet-compartment Oextend horizontally into the shell and are adapted to form thevalve-seats for the gas-supply- .regulating valve. The latter consistsof vertical spindle 3 and V-shaped valvedisks 4 and. 5, which latter aresecured with the spindle by means of pins 4 and 5. Seatbushings 6 and 7are secured with the metal of the inlet-compartment wall. They areadapted to be replaced by another seat-bushing and providevalve-openings 6 and 7. The V-shaped valve-disks 4- andv 5 are of adifferential diameter, so that the valvespindle may be inserted into itsplace from below through an opening in the bottom of the casing, whichis subsequently closed by a screw-plug S. The differential area of thevalve-disks serves the further purpose of facilitating the valvemovement, as will be more fully explained. Plug 8 is provided with bore9, adapted to receive the lower end of spindle 3 for the purpose ofguiding it. A partition-wall 10, forming part of the shellcasting,divides compartments D and E, and the small opening 11 in its centeraffords passageto the valve-s indle 3, as well as for the gas.Valve-spindle 3 extends into compartment E and carries at its upper enda float 12, which is adjustably secured thereto by lock-nuts 13. Agroove 14 is formed between the outer wall of shell B and partition-wall10. This groove contains mercury or any other heavy liquid, into whichthe lower rim of float 12 emerges for the purpose of forming a gas-tightseal therewith. The side of shell B adjacent to the feedingcompartment Dand outwardly thereof is provided with boss 15, which is drilled andtapped with pipe-thread 16 to receive a teed-pipe through which the gasis led to a plurality of lamps. Float 12 is of the open gasometer-bellshape. Its weight is so calculated that the required. largevalve-opening between valve-seats 6 and 7 and V-shaped disks 4 and 5 isprovided when the pressure of the gas is low and that its lower rimstill forms a seal with the mercury in groove 14 when the gas-pressureis high and when the valves are closed, as shown in Fig. 1.

From the foregoing description it will be apparent that the pressure inFeeding-compartment D is always stationary, regardless of the number ol"lamps which are led this compartment at the same time, [or the reasonthat the valve-opening is increased and decreased automatically in adirect proportion with the volume ol which the teeding-compartment D isc supply.

In operation the controller-valve acts as follows: Gas is admitted intoinlet-conmartment C and passes into feeding-compart- Inent D throughvalve-openings 6 and 7. From this compartment it enters the teedpipeattached to boss 15 and fills it. If no gas is drawn from the feed-pipe,the pressure in compartment D increases, and as this compartment is incommunication with iloat-compartment E through opening 11 it enters thegas-space under the Heat 12, raises the latter, and with it valve-disksl: and 5, until the latter are seated in their respective seats. Thisaction is assisted by the fact that the area of valve-disk 5 on the sideadjacent to compartment D is slightly larger than the area adjacent tocompartment C, owing to its V shape. As soon as a number of lamps beginto draw from feeding-compartment D the pressure therein diminishes, andthe Heat 12 sinks by reason of its weight, valvedisks at and. 5 leavetheir seat, and valve-openings 6 and. 7 are cleared for the passage ofexactly the volume of gas which is required. for the supply of thel'i'OlIl arled upon to number of lamps burning at that time. if morelamps are added, the pressure in compartment D has a tendency to dropstill further. This allows the float to sink deeper into its seal, whichincreases both valveopenings. On the other hand, it the number of lampsis decreased, the pressure in l) increases. This raises float 12 and.decreases valve-openings 6 and. 7, as will be obvious.

I am aware that prior to myinvention gascontrollers have been made witha verticallyarranged valve, actuated by a Iloa t and. ad apted toregulate the {low ol gas. 1 therefore do not claim such a combinationbroadly;but

-What l do claim as my invention, and desire to secure by .lQettersPatent, is

l n a gas-controlling valve, the combination, of a body consisting ol"one homogeneous casting comprising an inlet and an outlet chamber, witha valwt-spindle, two V-shapcd disks of a dill'erential diameter mountedupon said valve-spindle, two 'alve-smits to correspend with therespective disks, a domc shaped partition 10 forming one solid castingwith the said body, an aperture in thedomeshaped partition 10 tor thepurpose o l guiding the valve-spindle and allowing gas to pass from theoutlet-chamber D through the same, a lloat secured with the upper end ofthe said valve-spimlle, an annular chamber 14 formed by the outer shellof the valve-body and the said partit.i mwall 10 for retaining thefluid, a screw-plug 8 in said castin 'in line with. the 'alve-seats, abore 9 therein tor the purpose of guiding the lower end ol the saidvalve-spindle, a plurality of" inleteopenings into the inlet-chamber andan outlet-opening from the outlct-chaniber.

ln testimony whereof I have signed. my name to this specification in thepresence ol two subscribing witnesses.

HERB ERT \VA'ISON 1 ll .l ill.

Vi tnesses: I

J. C. Goosniixx, B. J. (lunp'rox.

